Tissue level indicator



FIG. 1 is a front peripheral view of the tissue level indicator; and

FIG. 2 is a top view of the tissue level indicator; and,

FIG. 3 is a side view of the tissue level indicator containing a tissue box.

The broken line showing of structural features is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a tissue level indicator, as shown and described. 